Break-out tongs



Aug. 18, 1925. 1,550,071

WLR. GUIBERSON BREAK-OUT TONGS Filed J ly 1924 5 Sheets-Shee't 1 Aug.18, 1925.

W. -R. G UIBERSON Filed y' 1924 a Sheets-Sheet 2 Aug. 18. 1925.

W. R., GUIBERSON BREAK-OUT TONGS Filed. July 21 192 s Shets-Sh eet sPatented Aug. 18, 1925.

WILIJIELM R. GUIBERSON, DE LOS ANGELES, CALIFORNIA; ASSIG'NOR'TOTHEGUIBERe son CORPORATION, ornnrnes; Texas; A CORPORATIONonqnntnwean;

Application filed July 21, 1924. Serial No. 727,234.

To all whom it may; concern:

Be it known that I, WILLIAIVLR. GUIBER- sort, a citizen of the UnitedStates of America residing at Los Angeles, in the 5. county. of. LosAngeles and State of California, ,haveinvented certain new andusefulImprovements in Break-Out Tongs, of

which ,the following is arspecification.

This invention relates to new anduseful improvements in breakouttongsfor rotary well drilling.

Tzhe objeotqof'the invention is toprovide a pair of tongs arranged to bemounted on the posts of a rotary. drilling rig,- so. as to be quicklyswung into position to grip the coupling or" as quickly swung out of theway.

A further object is to provide a tong or wrench of simple constructionarranged to grip different diameters and acting to take a quick and firmhold on the work.

A; construction designed to carry out the invention will be hereinafterdescribed together with other features of the invention.

The invention will be more readily understood from a reading of thefollowing specification and by reference to the accompanying drawings,in which an example of the invention is shown, and wherein:

Fig. 1 is a plan view of a pair of tongs constructed in accordance withmy invention,

' Fig. 2 is a front elevation of the same Fig. 3 is a view showing aportion of the tongs in transverse section,

Fig. 1 is a cross-sectional view taken on the line 44; of Fig. 3,

Fig. 5 is a cross-sectional view taken on the line 5-5 of Fig. 3, and

Fig. 6 is a plan View showing the members of the tongs swung away fromthe work.

In the drawings the numeral 10 designates a supporting arm and 11 a likearm. Each arm has an eye 12 at its outer end for fitting on theshouldered post A of the rotary. To the inner end of each arm is pivoteda jaw composed of arcuate members 13 and 1 1 respectively.

The member 13, in each instance, has one end pivoted to its correlatedarm upon a pin 15 and the said member is preferably bifurcated so as toreceive said arm. The opposite end of each member 13 is also bifurcatedto receive the reduced end of the member 14;, which is; pivoted.thereto. by a pin 16, forming aknuckle joint.

The. jaws have arcuate inner faces and are provided. with dies 17 i orany, other gripping means for engaging the work. Eachjaw' member let hasa, handle 18 projecting from its outer. surface, by which it may beswung, The router. end of each inem-r ber 14.- is; formed Wlthlfllllextended lug: 19 provided with stepped latch faces: 20. and21respectively. I

Adjacentxthe pins l5 bifurcated links-22 are pivoted on pins 23. Thelinksstraddle the arms 10 and 11, respectively and are oppositelydirected.= Each linkhas a handle 24- at. its outer: end and is adapted?to. be swung over the lug 19 of the other tong member. The pivot pin 23of each link is offset laterally on the arm with relation to the pin 15.Each link is engaged with the face 20 for the smaller size and with theface 21 for the large size of coupling or joint.

It will be seen that the link 22 of'one tong member is engaged with theouter end of the jaw of the other tong member and there is a space leftbetween the outer end or lug 19 of each jaw and the arm of the othermember. Thus when the table carrying the posts A is rotated the dies 17engaging with the work will cause the arms 10 and 11 to swing and bymeans of the links pull the jaws into gripping relation with the work.

I11 using the tongs the arms 10 and 11 carrying the two members of thetongs are swung from the position shown in Fig. 6 to the position shownin Fig. 1. The jaw members 13 and 1 1 are then swung into positionaroimd the work and fastened by the links 22. The table is rotated andthe posts A swinging the arms 10 and 11 cause the dies 17 to bite intothe work and the jaws to grip the work, owing to the offset relation ofthe pins 15 and 23. When it is desired to remove the tongs the links 22are swung from the lugs 19. The operator by grasping the handles 18 mayswing the jaws back upon the arms 10 and 11 and then swing said armsback to the position shown in Fig. 6'.

Various changes in the size and shape of the different parts, as well asmodifications and alterations may be made within the scope of theappended claims.

hat I claim, is:

1. In a break-out tong, arcuate jaws each having an extension directedoutwardly, radial arms pivoted to the opposite ends of the jaws, andlinks pivoted on the arms adjacent the pivots of said arms anddetachably engaging the extensions of the jaws, said jaws beingsupported by the arms andarranged to swing back against said arms.

2. In a break-out tong, areuate jaws each having an extension directedoutwardly, radial arms pivoted to the opposite ends of the jaws, linkspivoted on the arms adjacent the pivots of said arms and detachablyengaging the extensions of the jaws, said jaws being supported by thearms and arranged to swing back against the arms, and handles on thejaws for swinging the same.

3. In a break-out tong, arcuate jaws each comprising two members hingedtogether and one member having an outwardly directed extension thereon,arms pivoted to the outer ends of the other members of the jaws, andlinks hinged to the arms in juxtaposition to the pivots of the latterand detachably engaging the extensions of the jaws, the

jaws being arranged to swing relatively of the arms and being quicklydisconnected therefrom.

In a break-out tong, a pair of jaws composed of arcuate members, onemember of each jaw having its outer end bifurcated and the other memberhaving a lug on its outer end, elongated arms each having its inner endpivoted in the bifurcated end of one of the jaw members and providedwith an eye at its outer end, and links pivoted on the arms adjaeent thejaws and detachably en gaging the lugs of the jaws.

5. in a break-out tong.,a pair of jaws composed of arcuate members, onemember of each jaw having its outer end bifurcated and the other memberhaving a lug on its outer end, elongated arms each having its inner endpivoted in the bifurcated end of one of the jaw members and providedwith an eye at its outer end, and links pivoted on the arms adjacent thejaws and detachably engaging the lugs of the jaws, the lugs of the jawshaving stepped latch faces engaged by the links.

In testimony whereof I afiix my signature.

"WILLIAM R. GUIBERSON.

